CN105649652B - The real-time monitoring grouting strengthening method that a kind of Support System in Soft Rock Tunnels is built - Google Patents
The real-time monitoring grouting strengthening method that a kind of Support System in Soft Rock Tunnels is built Download PDFInfo
- Publication number
- CN105649652B CN105649652B CN201610105350.3A CN201610105350A CN105649652B CN 105649652 B CN105649652 B CN 105649652B CN 201610105350 A CN201610105350 A CN 201610105350A CN 105649652 B CN105649652 B CN 105649652B
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- Prior art keywords
- core
- grouting
- face
- slip casting
- support system
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- 239000011435 rock Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012544 monitoring process Methods 0.000 title claims abstract description 10
- 238000005728 strengthening Methods 0.000 title claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 27
- 238000007569 slipcasting Methods 0.000 claims abstract description 18
- 210000005239 tubule Anatomy 0.000 claims abstract description 15
- 239000004568 cement Substances 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 238000000151 deposition Methods 0.000 claims abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims abstract description 3
- 238000009412 basement excavation Methods 0.000 claims description 4
- 238000004033 diameter control Methods 0.000 claims description 3
- 239000010438 granite Substances 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002789 length control Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The real-time monitoring grouting strengthening method that a kind of Support System in Soft Rock Tunnels is built, belongs to Tunnel Engineering technical field.Comprise the following steps：When a circulation driving task is completed in tunnel, stop driving.Closing face is sprayed with net, is drilled along face, throws advanced tubule into.Grouting and reinforcing is carried out to face using advanced tubule.Grouting amount is controlled using grouting pressure, stops slip casting when final grouting pressure reaches 2~3MPa.After mortar depositing construction terminates, the core-drilling in injecting cement paste, slip casting situation is checked.Observe slurries filling situation and by core censorship.Next work cycle is carried out if core intensity and slurries filling situation reach the standard of construction.The present invention can improve the degree of safety that Support System in Soft Rock Tunnels is built, and reduce unnecessary personal casualty loss, and measure is reasonable and safely controllable.
Description
Technical field
The present invention relates to the real-time monitoring grouting strengthening method that a kind of Support System in Soft Rock Tunnels is built, belong to Tunnel Engineering technology
Field.
Background technology
At present, as national basis facility investment builds the increasing of dynamics, metro project and mountain tunnel project gradually increase
It is more, there is the constructing tunnel being greatly related in weak surrounding rock in these Tunnel Projects.Weak surrounding rock from support capacity
It is weaker, even without from support capacity.Therefore, constructed in weak surrounding rock above all improve country rock from supporting
Ability.And Grouting Consolidation has obtained extensively as a kind of method of practicable stable face in tunnel construction field
Application.
But the quality of slip casting how is controlled during Grouting Consolidation, between how controlling slip casting and excavating
Interval time do not form unified standard, slip casting effect can not obtain accurately evaluation and also become restriction weak surrounding rock
Construction safety, the key issue of quality control.The real-time monitoring note that a kind of Support System in Soft Rock Tunnels is built is invented in this case
Slurry reinforcement means is then particularly important.
The content of the invention
It is an object of the invention to overcome the shortcomings of Modelling of Tunnel Excavation in Soft Rock slip casting effect can not accurate evaluation, provide one
The real-time monitoring grouting strengthening method that kind Support System in Soft Rock Tunnels is built, the effect of grouting strengthening method can be carried out soon in time
Speed and accurately evaluate, so as to improve the degree of safety that Support System in Soft Rock Tunnels is built, reduce unnecessary personal casualty loss, measure is reasonable
It is and safely controllable.
The purpose of the present invention is realized by following working measure.
The real-time monitoring grouting strengthening method that a kind of Support System in Soft Rock Tunnels is built, contains following steps：
Step 1, when tunnel complete one circulation driving task when, stop driving.
Step 2, closing face is sprayed with net, drilled along face, throw advanced tubule into.
Step 3, using advanced tubule to face carry out grouting and reinforcing.
Step 4, using grouting pressure control grouting amount, stop slip casting when final grouting pressure reaches 2~3MPa.
After step 5, mortar depositing construction terminate, the core-drilling in injecting cement paste, slip casting situation is checked.
Step 6, observation slurries filling situation and by core censorship.
Step 7, carry out next work cycle if core intensity and slurries filling situation reach the standard of construction；If
Core intensity and slurries filling situation do not reach standard, then restart step 4 step.
Preferably, terminate in step 1 step, after a circulation excavation is completed in tunnel, to carry out the step 2 net spray closing palm immediately
Sub- face step.
Preferably, arch and Core Soil position of the advanced tubule 3 along face 2 are squeezed into, spacing between advanced tubule
0.3~0.5m.
Preferably, when carrying out slip casting to face 2, slurries used are cement single slurry.
Preferably, after slip casting terminates, according to the presetting period of cement grout, start to drill again after 45min~1h
Coring.
Preferably, during boring and coring, using special rig, core length control in 10~15cm, diameter control 5~
8cm。
Preferably, when intuitively observation core slurries fill situation, if slurries filling porosity reaches more than 80%, then it is assumed that
Slurries fill qualified carry out strength checking, otherwise, restart step 4 step.
Preferably, core intensity reaches the strength criterion of II level granite, then it is assumed that Surrounding Rock Strength is up to standard to be entered
The operation of the next circulation of row, otherwise, restarts step 4 step.
The advantages of grouting strengthening method of monitoring in real time of the present invention is can to overcome Modelling of Tunnel Excavation in Soft Rock slip casting
Effect can not accurate evaluation deficiency, monitor the effect of grouting and reinforcing in real time, and can be in time to the effect of grouting and reinforcing
Evaluated, so as to make up the deficiency of slip casting effect bad assessment when Support System in Soft Rock Tunnels is built, so as to improve tunneling
Degree of safety.
The present invention can improve the degree of safety that Support System in Soft Rock Tunnels is built, and reduce unnecessary personal casualty loss, and measure is reasonable
It is and safely controllable.
Brief description of the drawings
When considered in conjunction with the accompanying drawings, by referring to following detailed description, can more completely more fully understand the present invention with
And easily learn many of which with the advantages of, but accompanying drawing described herein be used for a further understanding of the present invention is provided,
The part of the present invention is formed, schematic description and description of the invention is used to explain the present invention, do not formed to this hair
Bright improper restriction, such as figure are wherein：
Fig. 1 is the flow chart of the present invention；
The front view of grouting program when Fig. 2 builds for Support System in Soft Rock Tunnels；
The side view of grouting program when Fig. 3 builds for Support System in Soft Rock Tunnels.
Icon explanation
2. face；3. advanced tubule；4. core.
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description, in order to which engineers and technicians manage
Solution.
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention provides the real-time monitoring grouting and reinforcing side that a kind of Support System in Soft Rock Tunnels is built
Method, this method comprise the following steps：
Step 1, when tunnel complete one circulation about advance 50cm driving task when, stop operation task, gets out wet shot
Machine.
Step 2, closing face is sprayed with net, is drilled with pneumatic pick or drill jumbo along face, throw advanced tubule into,
Arch and Core Soil position of the advanced tubule along face are squeezed into, 0.3~0.5m of spacing between advanced tubule, advanced small
Conduit squeezes into face about 1.5m~3m.
Step 3, when carrying out grouting and reinforcing to face using advanced tubule, slurries used are the cement that has configured in advance
Single slurry.
Using grouting pressure control grouting amount during step 4, slip casting, stop note when final grouting pressure reaches 2~3MPa
Slurry.
After step 5, mortar depositing construction terminate, after slip casting terminates, according to the presetting period of cement grout, in 45min~1h
Start boring and coring again afterwards, during boring and coring, using special rig, the length of core 4 is controlled in 10~15cm, diameter control
In 5~8cm.
Step 6, observation slurries filling situation, and by the censorship of core 4.
When step 7, observation core slurries filling situation directly perceived, if slurries filling porosity reaches more than 80%, then it is assumed that
Slurries filling is qualified.If core slurries filling situation does not reach standard, restart step 4 step.
When checking core intensity, if core intensity reaches the strength criterion of II level granite, then it is assumed that Surrounding Rock Strength is
The operation up to standard that next circulation can be carried out, otherwise, restarts step 4 step.
As described above, embodiments of the invention are explained, as long as but essentially without this hair of disengaging
Bright inventive point and effect can have many deformations, and this will be readily apparent to persons skilled in the art.Therefore, this
The variation of sample is also integrally incorporated within protection scope of the present invention.
Claims (1)
1. the real-time monitoring grouting strengthening method that a kind of Support System in Soft Rock Tunnels is built, it is characterised in that contain following steps：
Step 1, when tunnel complete one circulation driving task when, stop driving；
Step 2, closing face is sprayed with net, drilled along face, throw advanced tubule into；
Step 3, using advanced tubule to face carry out grouting and reinforcing；
Step 4, using grouting pressure control grouting amount, stop slip casting when final grouting pressure reaches 2~3MPa；
After step 5, mortar depositing construction terminate, the core-drilling in injecting cement paste, slip casting situation is checked；
Step 6, observation slurries filling situation and by core censorship；
Step 7, carry out next work cycle if core intensity and slurries filling situation reach the standard of construction；If core
Intensity and slurries filling situation do not reach standard, then restart step 4 step；
Terminate in step 1 step, after a circulation excavation is completed in tunnel, to carry out step 2 net spray closing face step immediately；
Arch and Core Soil position of the advanced tubule along face are squeezed into, 0.3~0.5m of spacing between advanced tubule；
When carrying out slip casting to face, slurries used are cement single slurry；
After slip casting terminates, according to the presetting period of cement grout, start boring and coring again after 45min~1h；
During boring and coring, using special rig, core length is controlled in 10~15cm, and diameter control is in 5~8cm；
During observation core slurries filling situation directly perceived, if slurries filling porosity reaches more than 80%, then it is assumed that slurries filling is closed
Lattice carry out strength checking, otherwise, restart step 4 step；
Core intensity reaches the strength criterion of II level granite, then it is assumed that Surrounding Rock Strength is up to standard can to carry out next circulation
Operation, otherwise, restart step 4 step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610105350.3A CN105649652B (en) | 2016-02-25 | 2016-02-25 | The real-time monitoring grouting strengthening method that a kind of Support System in Soft Rock Tunnels is built |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610105350.3A CN105649652B (en) | 2016-02-25 | 2016-02-25 | The real-time monitoring grouting strengthening method that a kind of Support System in Soft Rock Tunnels is built |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105649652A CN105649652A (en) | 2016-06-08 |
| CN105649652B true CN105649652B (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610105350.3A Active CN105649652B (en) | 2016-02-25 | 2016-02-25 | The real-time monitoring grouting strengthening method that a kind of Support System in Soft Rock Tunnels is built |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590704A (en) * | 2018-04-27 | 2018-09-28 | 中铁十二局集团有限公司 | Light section per-fore pouring liquid with small pipe pays maintaining method in advance |
| CN109578021B (en) * | 2018-11-29 | 2021-04-06 | 长安大学 | Grouting reinforcement method for soft rock tunnel |
| CN109611131A (en) * | 2018-12-10 | 2019-04-12 | 中交公局桥隧工程有限公司 | Process for treating primary support water leakage at rear part of palm surface |
| CN114991819B (en) * | 2022-05-20 | 2023-09-12 | 中国矿业大学(北京) | Three-super control technology for water damage tunnel |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1074001A (en) * | 1992-10-27 | 1993-07-07 | 中国建筑西南勘察院 | Processing method of hole digging mud jacking pile |
| CN101975070A (en) * | 2010-09-15 | 2011-02-16 | 中铁四局集团第五工程有限公司 | Advance pre-reinforcement method for unfavorable geology in cavern |
| CN102182470A (en) * | 2011-03-21 | 2011-09-14 | 同济大学 | Full-section sealing extrusion grouting method |
| CN103256060B (en) * | 2013-05-18 | 2015-01-14 | 中铁十六局集团有限公司 | Moisture rich and weak mylonite large section tunnel surrounding rock consolidation and excavation method |
| CN105041325B (en) * | 2015-07-13 | 2017-03-22 | 长沙理工大学 | Construction method of high-tension water-rich extra-large-section weak breccia tunnel |
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